Just

I think the meaning is simpler than it seems and I think it's the video that throws everybody off. Personally I always thought that this song was about a person's kindness being taken advantage of. Someone is making them feel guilty and emotionally blackmailing them into helping them. But the person always gives in out of pity:

"He's been hanging around for days Comes like a comet Suckered you but not your friends One day he'll get to you"

I think the video is just reflecting the lyrics but a lot of people don’t pay attention to the words. The guy lying on the floor pleads not to be helped yet he is lying right in the middle of the pavement to the point where you can't help but notice him and ask what's wrong. In the end when the passerby and co try to find out they all end up lying down with him. It's that old saying of if you help those that don't deserve it, if you help those that bring it on themselves you end up being dragged into the mud with them and YOU become the real victim.